Vulnerability Report

CVE-2017-6181

Title: Ruby-Lang Ruby Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2017-6181.

CWE Category CWE-20

Published Date Apr 03, 2017

Modified Date May 13, 2026

Exploit Status Not Found

Score 7.5 CVSS v3.0

Exploit Probability (EPSS)

0.70%

Vulnerability Summary

CVE-2017-6181: The parse_char_class function in regparse.c in the Onigmo (aka Oniguruma-mod) regular expression library, as used in Ruby 2.4.0, allows remote attackers to cause a denial of service (deep recursion and application crash) via a crafted regular expression.

Impacted Vendors

yukihiro_matsumoto 1

ruby-lang 1

Reference Links

http://www.securityfocus.com/bid/97304 https://bugs.ruby-lang.org/issues/13234 https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/57660 http://www.securityfocus.com/bid/97304 https://bugs.ruby-lang.org/issues/13234 https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/57660

CVSS v3.0

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns